Hate to break it to you but that wasn't new in the 50s and 60s. The mechanisms by which it was done were changing away frome the machine politics of earlier eras - but ways to regulate what can and can't be done by neighborhood have been around since the birth of the country. Use of eminent domain for public works private ventures is at least as old as the railroads. Planned suburbs, company towns, bedroom communities and the like are all 19th century "new" things in the US.